Destruction Decoded

Volcanoes created more than 80% of our planet's surface, but explosive eruptions can be deadly; a journey under the earth to discover why volcanoes are so dangerous.

Dams control water supply and generate power, but cities can be submerged in minutes if something goes wrong; bridges and tunnels make hard-to-reach places easily accessible, but when they unexpectedly fail, the results can be disastrous.